[JGIT PATCH 0/8] Crude merge support

This series add some basic merge support to JGit. Its more of a "merge toolkit" than a merge implementation. I have about 200 lines of code in another codebase that calls this stuff in JGit to actually make a merge. Eventually I hope to migrate a lot of that code back into JGit, but for now its not here as I'm not entirely sure what API merge applications need, and how much of that code is application specific and how much of it should be core to JGit.

FWIW, that code will be open-sourced soon-ish too. But I really think a lot of it belongs in JGit, so it will probably migrate over.

No unit tests yet. Yea, I know. I've had this done and in use for about 3 or 4 weeks now. I just couldn't find the time to get the Javadoc cleaned up to post to the list for comments, let alone write unit tests.

But it does add the missing "write-tree" support to DirCache. :)

Shawn O. Pearce (8):
  Expose the raw path for the current entry of a TreeWalk
  Expose DirCacheEntry.getFileMode as a utility function
  Add writeTree support to DirCache
  Allow a DirCache to be created with no backing store file
  Allow CanonicalTreeParsers to be created with a UTF-8 path prefix
  Recursively load an entire tree into a DirCacheBuilder
  Allow DirCacheEntry instances to be created with stage > 0
  Define a basic merge API, and a two-way tree merge strategy

 .../src/org/spearce/jgit/dircache/DirCache.java    |   37 ++++
 .../org/spearce/jgit/dircache/DirCacheBuilder.java |   58 ++++++
 .../org/spearce/jgit/dircache/DirCacheEntry.java   |   61 +++++-
 .../org/spearce/jgit/dircache/DirCacheTree.java    |  115 +++++++++++
 .../spearce/jgit/errors/UnmergedPathException.java |   67 +++++++
 .../src/org/spearce/jgit/lib/FileMode.java         |    7 +
 .../src/org/spearce/jgit/lib/ObjectWriter.java     |   12 +-
 .../src/org/spearce/jgit/merge/MergeStrategy.java  |  134 +++++++++++++
 .../src/org/spearce/jgit/merge/Merger.java         |  207 ++++++++++++++++++++
 .../org/spearce/jgit/merge/StrategyOneSided.java   |   98 +++++++++
 .../jgit/merge/StrategySimpleTwoWayInCore.java     |  179 +++++++++++++++++
 .../jgit/treewalk/AbstractTreeIterator.java        |   31 +++
 .../spearce/jgit/treewalk/CanonicalTreeParser.java |   28 +++
 .../src/org/spearce/jgit/treewalk/TreeWalk.java    |   17 ++-
 14 files changed, 1041 insertions(+), 10 deletions(-)
 create mode 100644 org.spearce.jgit/src/org/spearce/jgit/errors/UnmergedPathException.java
 create mode 100644 org.spearce.jgit/src/org/spearce/jgit/merge/MergeStrategy.java
 create mode 100644 org.spearce.jgit/src/org/spearce/jgit/merge/Merger.java
 create mode 100644 org.spearce.jgit/src/org/spearce/jgit/merge/StrategyOneSided.java
 create mode 100644 org.spearce.jgit/src/org/spearce/jgit/merge/StrategySimpleTwoWayInCore.java